Util::Any - to export any utilities and to create your own utility module
use Util::Any -list; # you can import any functions of List::Util and List::MoreUtils print uniq qw/1, 0, 1, 2, 3, 3/;
If you want to choose functions
use Util::Any -list => ['uniq']; # you can import uniq function only, not import other functions print uniq qw/1, 0, 1, 2, 3, 3/;
If you want to import All kind of utility functions
use Util::Any -all; my $o = bless {}; my %hash = (a => 1, b => 2); # from Scalar::Util blessed $o; # from Hash::Util lock_keys %hash;
If you want to import functions with prefix(ex. list_, scalar_, hash_)
use Util::Any -all, {prefix => 1}; use Util::Any -list, {prefix => 1}; use Util::Any -list => ['uniq', 'min'], {prefix => 1}; print list_uniq qw/1, 0, 1, 2, 3, 3/;
If you want to import functions with your own prefix.
use Util::Any -list => {-prefix => "l_"}; print l_uniq qw/1, 0, 1, 2, 3, 3/;
If you want to import functions as different name.
use Util::Any -list => {uniq => {-as => 'listuniq'}}; print listuniq qw/1, 0, 1, 2, 3, 3/;
When you use both renaming and your own prefix ?
use Util::Any -list => {uniq => {-as => 'listuniq'}, -prefix => "l_"}; print listuniq qw/1, 0, 1, 2, 3, 3/; print l_min qw/1, 0, 1, 2, 3, 3/; # the following is NG print l_uniq qw/1, 0, 1, 2, 3, 3/;
For the people like the man who cannot remember uniq function is in whether List::Util or List::MoreUtils. And for the newbie who don't know where useful utilities is.
uniq
Perl has many modules and they have many utility functions. For example, List::Util, List::MoreUtils, Scalar::Util, Hash::Util, String::Util, String::CamelCase, Data::Dumper etc.
We, Perl users, have to memorize modules name and their functions name. Using this module, you don't need to memorize modules name, only memorize kinds of modules and functions name.
And this module allows you to create your own utility module, easily. You can create your own module and use this in the same way as Util::Any like the following.
use YourUtil -list;
see CREATE YOUR OWN Util::Any, in detail.
CREATE YOUR OWN Util::Any
use Util::Any -list, -hash;
Give list of kinds of modules. All functions in modules are exported.
NOTE THAT kind '-all', 'all' or ':all' cannot take this option.
use Util::Any -list => ['uniq'], -hash => ['lock_keys'];
Give hash whose key is kind and value is function names as array ref. Selected functions are exported.
you can write it as hash ref.
use Util::Any {-list => ['uniq'], -hash => ['lock_keys']};
Util::Any can take last argument as option, which should be hash ref.
add kind prefix to function name.
use Util::Any -list, {prefix => 1}; list_uniq(1,2,3,4,5); # it is List::More::Utils's uniq function
see "PREFIX FOR EACH MODULE". Uti::Any itself doesn't have such a definition.
see "SMART RENAME FOR EACH KIND".
If utility module based on Util::Any has plugin, Its plugins are loaded when related kind is specified(if kind name matches module name). If you want to load all plugin on using module, give 'eager' to this option. If you don't want to use plugin, set 0.
use Util::Yours -kind, .... {plugin => 'eager'}; # all plugins are loaded use Util::Yours -kind, .... {plugin => 0}; # disable plugin feature. use Util::Yours -kind; # is equal {plugin => 'lazy'}
Relation of kind name and plugin name is the following.
for example, If you have the following modules.
Util::Yours::Plugin::Date Util::Yours::Plugin::DateTime Util::Yours::Plugin::Net Util::Yours::Plugin::Net::Amazon Util::Yours::Plugin::Net::Twitter
the following code:
use Util::Yours -date; # Plugin::Date is loaded use Util::Yours -datetime; # Plugin::DateTime is loaded use Util::Yours -net; # Plugin::Net is loaded use Util::Yours -net_amazon; # Plugin::Net::Amazon is loaded use Util::Yours -net_all; # Plugin::Net and Plugin::Net::* is loaded
_all is special keyword. see "NOTE ABOUT all KEYWORD".
_all
Util::Any doesn't say anything when loading module fails. If you pass debug value, warn or die.
use Util::Any -list, {debug => 1}; # warn use Util::Any -list, {debug => 2}; # die
Kinds of functions and list of exported functions are below. Note that these modules and version are on my environment(Perl 5.8.4). So, it must be different on your environment.
NOTE THAT: its old name is 'scalar' (you can use the name, yet).
from Scalar::Util (1.19)
blessed dualvar isvstring isweak looks_like_number openhandle readonly refaddr reftype set_prototype tainted weaken
from Hash::Util (0.05)
hash_seed lock_hash lock_keys lock_value unlock_hash unlock_keys unlock_value
from List::Util (1.19)
first max maxstr min minstr reduce shuffle sum
from List::MoreUtils (0.21)
after after_incl all any apply before before_incl each_array each_arrayref false first_index first_value firstidx firstval indexes insert_after insert_after_string last_index last_value lastidx lastval mesh minmax natatime none notall pairwise part true uniq zip
from List::Pairwise (0.29)
mapp grepp firstp lastp map_pairwise grep_pairwise first_pairwise last_pairwise pair
from String::Util (0.11)
crunch define equndef fullchomp hascontent htmlesc neundef nospace randcrypt randword trim unquote
from String::CamelCase (0.01)
camelize decamelize wordsplit
from Data::Dumper (2.121)
Dumper
Like Sub::Exporter, Util::Any can export function name as you like.
use Util::Yours -list => {-prefix => 'list__', miin => {-as => "lmin"}};
functions in -list, are exported with prefix "list__" except 'min' and 'min' is exported as lmin.
lmin
There are some ways to change function name. Their priority is the following.
-list => {uniq => {-as => 'luniq'}}
-list => {-prefix => list}
Only if module's prefix is defined
..., {module_prefix => 1}
..., {prefix => 1}
..., {smart_rename => 1}
I don't recommend to use 3, 4, 5 in same time, because it may confuse you.
if module's prefix is defined in class(not defined in Util::Any), use 3, or use 4.
3 or 5. reason is as same as the above.
5 is ignored.
all is special keyword, so it has some restriction.
use Util::Any -all; # or 'all', ':all'
This cannot take sequential arguments for "all". For example;
NG: use Util::Any -all => ['shuffle'];
When sequential arguments is kind's, it's ok.
use Util::Any -all, -list => ['unique'];
use Util::Yours -plugin_name_all;
This cannot take sequential arguments for it. For example:
NG: use Util::Yours -plugin_name_all => ['some_function'];
Just inherit Util::Any and define $Utils hash ref as the following.
package Util::Yours; use Clone qw/clone/; use Util::Any -Base; # as same as use base qw/Util::Any/; # If you don't want to inherit Util::Any setting, no need to clone. our $Utils = clone $Util::Any::Utils; push @{$Utils->{-list}}, qw/Your::Favorite::List::Utils/; 1;
In your code;
use Util::Yours -list;
$Utils => { # simply put module names -kind1 => [qw/Module1 Module2 ..../], -# Module name and its prefix -kind2 => [ [Module1 => 'module_prefix'], ... ], # limit functions to be exported -kind3 => [ [Module1, 'module_prefix', [qw/func1 func2/] ], ... ], # as same as above except not specify modul prefix -kind4 => [ [Module1, '', [qw/func1 func2/] ], ... ], };
NG $Utils = { LIST => [qw/List::Util/]}; OK $Utils = { list => [qw/List::Util/]}; OK $Utils = { -list => [qw/List::Util/]}; OK $Utils = { ':list' => [qw/List::Util/]};
all
NG $Utils = { all => [qw/List::Util/]}; NG $Utils = { -all => [qw/List::Util/]}; NG $Utils = { ':all' => [qw/List::Util/]};
Scalar is module name. Array ref is module name and its prefix.
$Utils = { list => ['List::Utils'] }; $Utils = { list => [['List::Utils', 'prefix_']] };
see "PREFIX FOR EACH MODULE"
If you want to import many modules and they have same function name. You can specify prefix for each module like the following.
use base qw/Util::Any/; our $Utils = { list => [['List::Util' => 'lu_'], ['List::MoreUtils' => 'lmu_']] };
use Util::Yours qw/list/, {module_prefix => 1};
smart_rename option rename function name by a little smart way. For example,
our $Utils = { utf8 => [['utf8', '', { is_utf8 => 'is_utf8', upgrade => 'utf8_upgrade', downgrade => 'downgrade', } ]], };
In this definition, use prefix = 1> is not good idea. If you use it:
prefix =
is_utf8 => utf8_is_utf8 utf8_upgrade => utf8_utf8_upgrade downgrade => utf8_downgrade
That's too bad. If you use smart_rename = 1> instead:
smart_rename =
is_utf8 => is_utf8 utf8_upgrade => utf8_upgrade downgrade => utf8_downgrade
rename rule is represented in _create_smart_rename in Util::Any.
To define _create_smart_rename, you can change smart_rename behaviour. _create_smart_rename get 2 argument, package name and kind of utility, and should return code reference which get function name and return new name. As an example, see Util::Any's _create_smart_rename.
Util::Any automatically export functions from modules' @EXPORT and @EXPORT_OK. In some cases, it is not good idea like Data::Dumper's Dumper and DumperX. These 2 functions are same feature.
DumperX
So you can limit functions to be exported.
our $Utils = { -debug => [ ['Data::Dumper', '', ['Dumper']], # only Dumper method is exported. ], };
or
our $Utils = { -debug => [ ['Data::Dumper', '', { -select => ['Dumper'] }, # only Dumper method is exported. ] ], };
Inverse of -select option. Cannot use this option with -select.
our $Utils = { -debug => [ ['Data::Dumper', '', { -except => ['DumperX'] }, # export functions except DumperX ] ], };
To rename function name, write original function name as hash key and renamed name as hash value. this definition is prior to -select/-except.
In the following example, 'min' is not in -select list, but can be exported.
our $Utils = { -list => [[ 'List::Util', '', { 'first' => 'list_first', # first as list_first 'sum' => 'lsum', # sum as lsum 'min' => 'lmin', # min as lmin -select => ['first', 'sum', 'shuffle'], } ]] };
It's somewhat complicate, I just show you code.
Your utility class:
package SubExporterGenerator; use strict; use Util::Any -Base; our $Utils = { -test => [[ 'List::Util', '', { min => \&build_min_reformatter,} ]] }; sub build_min_reformatter { my ($pkg, $class, $name, @option) = @_; no strict 'refs'; my $code = do { no strict 'refs'; \&{$class . '::' . $name}}; sub { my @args = @_; $code->(@args, $option[0]->{under} || ()); } }
Your script using your utility class:
package main; use strict; use lib qw(lib t/lib); use SubExporterGenerator -test => [ min => {-as => "min_under_20", under => 20}, min => {-as => "min_under_5" , under => 5}, ]; print min_under_20(100,25,30); # 20 print min_under_20(100,10,30); # 10 print min_under_20(100,25,30); # 5 print min_under_20(100,1,30); # 1
If you don't specify -as, exported function as min. But, of course, the following doesn't work.
-as
min
use SubExporterGenerator -test => [ min => {under => 20}, min => {under => 5}, ];
Util::Any try to export duplicate function min, one of both should fail.
You may want to give default arguments to all code generators in same kind. For example, if you create shortcut to use Number::Format, you may want to give common arguments with creating instance.
-number => [ [ 'Number::Format' => { 'round' => sub { my($pkg, $class, $func, $args, $default_args) = @_; my $n = 'Number::Format'->new(%$default_args); sub { $n->round(@_); } }, 'number_format' => sub { my($pkg, $class, $func, $args, $default_args) = @_; my $n = 'Number::Format'->new(%$default_args, %$args); sub { $n->format_number(@_); } } } ];
And write as the following:
use Util::Yours -number => [-args => {thousands_sep => "_", int_curr_symbol => '\'} ]; print number_format(100000); # 100_000 print number_price(100000); # \100_000
thousands_sep and int_curr_symbol are given to all of -number kind of function.
-strict => [ [ 'strict' => { '.' => sub { strict->import(); warnings->import(); }, } ];
This definition works like as pragma.
use Util::Yours -strict;
function name '.' is special. This name is not exported and only execute the code in the definition.
Define the following method.
package You::Utils -Base; # .... sub _default_kinds { '-list', '-string' }
This means '-list' and '-string' arguments are given as default exporting arguments. So, these are same.
use Your::Utils;
is equal to
use Your::Utils -list, -string;
If you want to disable default kinds.
use Your::Utils -list => [], -string;
Just add a flag -Pluggbale.
package Util::Yours; use Util::Any -Base, -Pluggable;
And write plugin as the following:
package Util::Yours::Plugin::Net; sub utils { # This structure is as same as $Utils. return { # kind name and plugin name should be same. -net => [ [ 'Net::Amazon', '', { amazon => sub { my ($pkg, $class, $func, $args) = @_; my $amazon = Net::Amazon->new(token => $args->{token}); sub { $amazon } }, } ] ] }; } 1;
And you can use it as the following.
use Util::Yours -net => [amazon => {token => "your_token"}]; my $amazon = amazon; # get Net::Amazon object;
Util::Any can merge definition in plugins. If same kind is in several plugins, it works. But same kind and same function name is defined, one of them doesn't work.
NOTE THAT: I don't recommend this usage, because using this may confuse user; some of import options are for Util::Any and others are for exporter-like module (especially, using with Sub::Exporter is confusing).
CPAN has some modules to export functions. Util::Any can work with some of such modules, Exporter, Exporter::Simple and Sub::Exporter. (note that: Perl6::Export::Attrs is not supported after version 0.25 and the above) If you want to use other modules, please inform me or implement import method by yourself.
If you want to use module mentioned above, you have to change the way to inherit these modules.
If your utility module which inherited Util::Any has utility functions and export them by Exporter-like module, behaviour of 'all' and '-all' or ':all' is a bit different.
'all' ... export all utilities defined in your package's $Utils variables. '-all' or ':all' ... export all utilities including functions in your util module itself.
Normally, you use;
package YourUtils; use Util::Any -Base; # or "use base qw/Util::Any/;"
But, if you want to use Exporter, Exporter::Simple or Perl6::Export::Attrs. write as the following, instead.
# if you want to use Exporter use Util::Any -Exporter; # if you want to use Exporter::Simple use Util::Any -ExporterSimple; # if you want to use Sub::Exporter use Util::Any -SubExporter;
That's all. Note that don't use base the above modules in your utility module.
There is one notice to use Sub::Exporter.
Sub::Exporter::setup_exporter ({ as => 'do_import', # name is important exports => [...], groups => { ... }, });
You must pass "as" option to setup_exporter and its value must be "do_import". If you want to change this name, do the following.
Sub::Exporter::setup_exporter ({ as => $YourUtils::SubExporterImport = '__do_import', exports => [...], groups => { ... }, });
Ktat, <ktat at cpan.org>
<ktat at cpan.org>
Please report any bugs or feature requests to bug-util-any at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Util-Any. I will be notified, and then you'll automatically be notified of progress on your bug as I make changes.
bug-util-any at rt.cpan.org
You can find documentation for this module with the perldoc command.
perldoc Util::Any
You can also look for information at:
AnnoCPAN: Annotated CPAN documentation
http://annocpan.org/dist/Util-Any
CPAN Ratings
http://cpanratings.perl.org/d/Util-Any
RT: CPAN's request tracker
http://rt.cpan.org/NoAuth/Bugs.html?Dist=Util-Any
Search CPAN
http://search.cpan.org/dist/Util-Any
svn co http://svn.coderepos.org/share/lang/perl/Util-Any/trunk Util-Any
Subversion repository of Util::Any is hosted at http://coderepos.org/share/. patches and collaborators are welcome.
The following modules can work with Util::Any.
Exporter, Exporter::Simple, Sub::Exporter and Perl6::Export::Attrs.
The following is new module Util::All, based on Util::Any.
http://github.com/ktat/Util-All
Copyright 2008-2010 Ktat, all rights reserved.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.
To install Util::Any, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Util::Any
CPAN shell
perl -MCPAN -e shell install Util::Any
For more information on module installation, please visit the detailed CPAN module installation guide.